A kind of medicament and treatment method for treating municipal domestic sludge

A technology of municipal domestic sludge and chemicals, which is applied in the field of chemicals for treating municipal domestic sludge and urban sewage sludge, which can solve the problems of high processing costs, achieve accelerated processing speed and efficiency, facilitate flow operations, and improve easy hardening Effect

Inactive Publication Date: 2019-10-25
浙江清牧环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although the problem of sludge treatment has received extensive attention, the high cost of treatment is still an important factor restricting the proper solution to the sludge problem nationwide.

Method used

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  • A kind of medicament and treatment method for treating municipal domestic sludge
  • A kind of medicament and treatment method for treating municipal domestic sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A medicament for treating municipal domestic sludge, the composition of which is calculated by mass percentage:

[0034] 5% of mineral powder, 10% of bleaching powder, 6% of PAC with a salinity of 50%, 76.6% of zwitterionic polyacrylamide, 2% of silkworm excrement and 0.4% of sewage treatment bacteria, of which:

[0035] Mineral powder, bleaching powder, PAC, PAM and silkworm excrement must pass through a 50-mesh sieve before use.

[0036] Silkworm excrement is used after being coated with carboxymethyl chitosan, the ratio of silkworm excrement and carboxymethyl chitosan is 100:5 by weight, after spray drying, carboxymethyl chitosan is coated on the surface of silkworm excrement,

[0037] Sewage treatment strains are special strains for waste water treatment, trade name: Nitrate (nitrifying bacteria), manufacturer: Dongxing Defeng Biotechnology Co., Ltd.

[0038] Using domestic sludge from a certain city as shown in Table 1, according to figure 1 The method shown does...

Embodiment 2

[0046] A medicament for treating municipal domestic sludge, the composition of which is calculated by mass percentage:

[0047] Mineral powder 7%, bleaching powder 5%, PAC 3% with a salinity of 60%, zwitterionic polyacrylamide 79%, silkworm excrement 5%, and sewage treatment bacteria 1.0%, of which:

[0048] Mineral powder, bleaching powder, PAC, PAM and silkworm excrement must pass through a 50-mesh sieve before use.

[0049] Silkworm excrement is used after being coated with carboxymethyl chitosan, the ratio of silkworm excrement and carboxymethyl chitosan is 100:5 by weight, after spray drying, carboxymethyl chitosan is coated on the surface of silkworm excrement,

[0050] Sewage treatment strains are special strains for waste water treatment, trade name: Nitrate (nitrifying bacteria), manufacturer: Dongxing Defeng Biotechnology Co., Ltd.

[0051] Using domestic sludge from a certain city as shown in Table 1, according to figure 1 The method shown does the processing to s...

Embodiment 3

[0059] A medicament for treating municipal domestic sludge, the composition of which is calculated by mass percentage:

[0060] 4% of mineral powder, 5% of bleaching powder, 3% of PAC with a salinity of 55%, 85% of zwitterionic polyacrylamide, 2.5% of silkworm excrement and 0.5% of sewage treatment bacteria, of which:

[0061] Mineral powder, bleaching powder, PAC, PAM and silkworm excrement must pass through a 30-mesh sieve before use.

[0062] Silkworm excrement is used after being coated with carboxymethyl chitosan, the ratio of silkworm excrement and carboxymethyl chitosan is 100:4 by weight, after spray drying, carboxymethyl chitosan is coated on the surface of silkworm excrement,

[0063] Sewage treatment strains are special strains for waste water treatment, trade name: Nitrate (nitrifying bacteria), manufacturer: Dongxing Defeng Biotechnology Co., Ltd.

[0064] Using domestic sludge from a certain city as shown in Table 1, start the generator set, press figure 1 The ...

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Abstract

The invention belongs to the field of urban sewage and sludge treatment and particularly relates to a medicament for treating urban domestic sludge. The medicament comprises the following components in percentage by weight: 4 %-7 % of mineral powder, 5 %-12 % of bleaching powder, 3 %-6 % of PAC, 70 %-85 % of PAM, 2 %-5 % of silkworm excrement and 0.4 %-1.0 % of a sewage treatment strain. By utilizing a microorganism-silkworm excrement biological technique, the urban domestic sludge is well treated, and the heavy metal contents of the treated domestic sludge are lower than a pollutant control standard limiting value in farm-oriented sludge of Standards for Discharge of Pollutants of Urban Sewage Treatment Plant; and meanwhile, the problem that the sludge is easily hardened in a natural sludge drying process is obviously improved.

Description

technical field [0001] The invention belongs to the field of urban sewage sludge treatment, in particular to a medicament for treating urban domestic sludge and a method for treating urban sewage sludge with the medicament. Background technique [0002] Municipal sewage (municipal sewage, municipal waste water) is a general term for sewage discharged into urban sewage systems. Urban sewage mainly includes domestic sewage and industrial sewage, which are generally collected by urban drainage pipe networks and transported to sewage treatment plants for treatment. Domestic sludge is a regular product of sewage treatment. Every 100 tons of sludge discharged from sewage treatment contains 80 tons of water. A large amount of water brings many difficulties to the subsequent treatment of sludge. The sludge contains a large number of microbial cells and organic colloidal substances, resulting in high sludge viscosity. [0003] Sludge treatment has always been one of the important i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/02
CPCC02F11/02
Inventor 金旭群
Owner 浙江清牧环保科技有限公司
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